Finding the Third Proportional to 3,971.81 and 7,843.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,971.81 : 7,843.88 = 7,843.88 : x
2. Step 2: Convert to fraction form
   3,971.81/7,843.88 = 7,843.88/x
3. Step 3: Cross multiply
   3,971.81x = 7,843.88 × 7,843.88
4. Step 4: Simplify right side
   3,971.81x = 61,526,375.02
5. Step 5: Solve for x
   x = 61,526,375.02/3,971.81
6. Step 6: Final answer
   x = 15,490.76